CJ will aim Tec9, Uzi and 9mm similar to the way Niko in GTAIV does.
This mod replaces weapons.dat file in GTA San Andreas/data (juts copy and paste .dat file into this folder).
Update1: Fixed pistol animation. I used my old buggy version).
Update2: Fixed ammo. Since I were changing only the Hitman level of my weapon and since both 9mm and uzi are dual wield they have 2x more ammo than the regular one, and I forgot to change these values back to normal wield weapon.
Enjoy
I know aiming with the mini-uzi crashes the game - I may fix it soon, though I don't know if I will find my GTA CD anytime soon.

It's impossible. Beacuse I changed parameters to hold 1 GUN.
That means some of mods doesn't match with my mod.
BTW.I'm not playing GTA that rare than before.
I'll check it now and response.
BTW2.I suggest to all users of my mod: Download GTA IV Weapon pack from gta.cz